A mutation occurs during the development of muscle cells but not in blood cells. Different genes are activated in muscle cells than in blood cells. Muscle cells experience different environmental influences than blood cells.
A A mutation occurs during the development of muscle cells but not in blood cells. B Different genes are activated in muscle cells than in blood cells. C Muscles cells experience different environmental influences than blood cells. D Muscle cells are produced by the brain, but blood cells are produced by the heart.
The result of the initial rotation of the cloud of gas and dust that condensed to form the Sun and planets. As gravity condensed the clouds, of angular momentum increased the rotational speed and flattened the cloud out into a disk.
